Dang, I bet when they lowered the back end at the dealership, that stinger arm just smashed the bumper from underneath. Glad they're working it out for ya.
Coincidentally, when I money shifted, the tow truck hooked me up the same way as in this thread, but damn it if he wasn't the best driver I'd ever met. He brought it back to my apartment, and "backed" the car into my spot perfectly on the first try in about all of 15 seconds.